热轧带钢尺寸精度的提升  

IMPROVEMENT OF DIMENSIONAL ACCURACY OF HOT ROLLED STRIP STEEL

作　　者：马啸晨 翟进坡 梁鹏 冯润壮 Ma Xiaochen;Zhai Jinpo;Liang Peng;Feng Runzhuang(Tangshan Delong Iron and Steel Co., Ltd., Tangshan, Hebei, 063600)

机构地区：[1]唐山市德龙钢铁有限公司,河北唐山063600

出　　处：《河北冶金》2021年第2期42-47,60,共7页Hebei Metallurgy

摘　　要：热轧带钢同条尺寸差及横截面三点差是反映带钢尺寸精度的两项重要指标。本文综合分析了热轧带钢生产过程中影响尺寸精度的关键因素,通过优化加热温度、降低中间坯厚度、优化立辊孔型、降低轧辊热膨胀、更改除尘方式、优化生产计划编排等措施,带钢生产过程稳定,尺寸精度得到显著提高,横截断面厚度差≤0.02 mm,同条厚度差≤0.05 mm。The dimension difference and cross section three-point difference of the same strip are two important indexes to reflect the dimensional accuracy of hot rolled strip.This paper comprehensively analyzes the key factors that affect the dimensional accuracy in the production process of hot rolled strip.By optimizing the heating temperature,reducing intermediate billet thickness,optimizing the vertical roll pass,reducing the thermal expansion of the roll,changing the dust removal method,optimizing the production plan arrangement and other measures,the strip production process is stable,the dimensional accuracy is significantly improved,the thickness difference of the cross section is≤0.02 mm,and the thickness difference of the same strip is≤0.5 mm.

关 键 词：热轧带钢 尺寸精度 同条差 三点差 加热温度 孔型 除尘方式 

分 类 号：TG335.5[金属学及工艺—金属压力加工]